Oľga Algayerová (born 13 October 1959)[1][2] is a Slovak diplomat and the former-Executive Secretary of the United Nations Economic Commission for Europe.

[3] Algayerová is a graduate of the University of Malta and the Open University Business School and holds a master's degree in contemporary diplomacy and an Engineer of Economy diploma from Business Faculty of the University of Economics in Bratislava.

[4] Prior to her diplomatic career, Algayerová worked in the private sector as Corporate Export Manager at Zentiva International from 2004 to 2006.

From 2010 to 2012, she held the position of President of the Slovak Millennium Development Goals.

[3] Before her appointment on 13 April 2017 by United Nations Secretary-General António Guterres, Algayerová was the Permanent Representative of Slovakia to the International Organizations in Vienna.